Apparatus for purifying boiler feed-water.



PATENTBD NOV. 24, 1903'.

T. SAULT. APPARATUS FOR PURIFYING BOILER FEED WATER.

APPLICATION FILED FEB. 25 1901 3.SKEETS'SHBBT 1.

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- PATENTED NOV. 24, 1903.

, APPLICATION FILED FEB. 25. 1901.

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PATENTED NOV; 24,1903.

T. SAULT. APPARATUS FOR PURIFYING BOILER FEED WATER.

APPLICATION FILED FEB. 25, 1901.

3 SHEETS-SHEET NO- MODEL.

' UNITED STATES Tatented November 24 19053.

PATENT OFFICE.

THOMAS SAULT, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO LOUIS R.

' ALBERGER, OF NEW YORK, N. Y.

APPARATUS FOR PURIFYI NG BOILER FEED- WATER.

SPECIFICATION forming part of Letters Patent No 745,297, dated November24, 1903.

Application filed February 25, 1901. Serial No. 48,752. (No model.)

1'0 all whom it may concern:

Be it known that I, THOMAS SAULT, a citizen of the United States,residing at New Haven, county of New Haven, and State of Connecticut,have invented certain new and useful Improvements in Apparatus forPurifying Boiler Feed-Water and other Liquids, fully described andrepresented in the following specification and the accompanyingdrawings, forming a part of the same.

This invention relates to apparatus for purifying boiler feed-water andother liquids by separating therefrom their suspended con-. stituents,and particularly oil or fat, so as to render such liquids suitable foruse.

The improvements of the present invention, though they may be used forthe purification in this way of liquids generally, have been designedwith especial reference to and will therefore and for convenience bedescribed in detail in connection with the more difficult operation ofpurifying the water resulting from the condensation of exhauststeam fromengines or the like, so as to render it suitable for reuse in the boilerby separating therefrom the oil which the steam takes up in passing thesteam -cylinders, valves, and other lubricated parts of the system. Partof this oil has heretofore been separated by the use of separatorsconsisting of settling-tanks, in which the oily water is permitted tostand for a time, the difference in specific gravity between the twoliquids being relied upon to cause the oil to rise to the surface of thewater, from which it can then be skimmed or run off. A completeseparation ofthe oil, however, cannot be effected by suchsettling-tanks, as they only separate part ofthe oil, or what may betermed the coarser or more readily separated oil, sufficient oil stillremaining in the water to render it unsuitable for use, and thisremaining oil being so thoroughly intermixed-with the water, in anapparently emulsified condition, that it cannot beseparated therefrom inthis way even if the water containing it be permitted to stand for daysor weeks,th'e particles of such oil being so minute and presenting sucha great surface and adhering so tenaciously to the water as to resistthe action trifugal force.

of gravity which tends to separate the oil and water.

Many'other different forms of apparatus have been suggested foreifecting a separation of the oil from the Water, but in none of themhasa complete separation of oil been effected. They are, moreover,expensive, requiring constant care and attention to avoid faultyoperation, and frequent stoppage of the operation being also necessaryfor cleansing the apparatus or cleansing and'replenishing the materialsemployed, which rendered the separating processes carried out in themintermittent and consequently slow, as in the case of thesettling-tanks. f

It is the object of the present invention to provide apparatus for thispurpose which will be continuous in its action and which will rapidly,economically, and completely separate the oil from the water.

To this end the invention as to its principal feature, generally stated,consists in a centrifugalseparator, or what may be termed a combinedseparator and purifier, because of its peculiar action, comprising aseparatorchamber providedwith a suitable inlet for the oily Water andwith suitable outlets for the purified water and the oil and containinga filling consisting of a mass of suitable material through which thewater passes and the surfaces of which are of such a character as toattract and cause the deposition upon them of suspended particlesof theoil and at the same time permit the movement through the mass ofaccumulations of such oil by pressure of the water under the action ofcen- Part of the oil in such apparatus is separated from the water bycentrifugal force and the remainder or finer oil separated by depositionupon such surfaces and discharged from the separator by the pressure ofthe water, which moves the accumulations of oil through the mass towardthe point of discharge at the center of the separator.

When operating upon very oily water or water in large quantities, thisapparatus may and preferably will have combined with it some form ofpreseparatoras, for example, a centrifugal separator--for the partialpreseparation of oil, so as to relieve such separator and purifier of aportion of the work. Also when operating upon Water of condensation apreseparator-as, for example, any suitable form of exhaust-separator-mayand preferably will be employed for the partial separation of oil fromthe exhaust-steam, so as to further relieve the separator and purifierof work.

The invention embodies various other features, which will be hereinafterreferred to, and particularly pointed out in the claims.

In the accompanying drawings, Figure l is a sectional elevation of thecombined separator and purifier referred to for effecting the separationof the oil by centrifugal force and by causing the deposition ofsuspended particles of oil on the surfaces of said filling. Figs. 2, 3,and 4 are horizontal sections of the same, taken on the lines 2, 3, and4, respectively, of Fig. 1. Fig. 5 is a sectional eleva- .tionillustrating a separator and purifier such as that illustrated in Fig.1, having combined with it a preseparator for the partial preseparationof oil from the water before its delivery,to said combined separator andpurifier. Figs. 6 and 7 are sections taken on the lines 6 and 7,respectively, of Fig. 5. Fig. 8 is a section on the line 8 of Fig. 6;and Fig. 9 is a diagrammatic view illustrating part of a steam-powerplant equipped with an exhaustseparator for partial separation of oilfrom the exhaust-steam, a prcseparator for partial separation of oilfrom the water of condensation, and a combined separator and. pu-

rifier for the complete separation of oil therefrom.

Referring to said drawings, the apparatus of Figs. 1 to 4, whichembodies the principal feature of the invention ,will first bedescribed. This apparatus consists of a suitable base 1, provided with abearing 2 for a shaft 3, to which is keyed a pulley 4, by which it isrotated, said shaft hearing at its upper end a centrifugal bucketrigidly secured to and rotating with it. This bucket is provided with aninner receiving-chamber 5, entered by a pipe 6, through which the oilywater to be purified is supplied. It is also provided with an outerannular chamber 7, which may be termed the separator and purifierchamber and which is provided with vertical walls 8 9 10, forming aninlet-chamber 11 for the oil-laden water and an outlet-chamber 12 forthe purified water. The receiving-chamber 5 communicates with theinlet-chamber 11 through a port or passage 13, and said inletchamber 11in turn communicates with the body of the chamber 7 through openings orperforations 14 in the wall 8, as bestillustrated in Figs.1 and 3, sothat as the oily water is introd need by the pipe 6 into thereceiving-chamber 5 it will pass through the port or passage 13 into thechamber 11 and thence through the openings 14 into the body of theannular chamber 7. The outlet or discharge chamber 12 for the purifiedwater communicates with Water-trough 19. 'from the chamber 7, however,would not be the body of the annular chamber 7 through openings 15 inthe wall 10, (see Figs. 1 and 4,) near the outer wall or periphery ofthe chamber 7, through which openings the purified Water enters thechamber 12 from chamber 7. Said chamber 12 is also provided at or nearits lower end with an opening 16, leading into a central chamber 17,inclosing the receivingchamber 5, and in this opening is located one endof a discharge-pipe 18, leading into a water trough or receptacle 19,secured to the base 1 of the machine. By locating the discharge-outletfor the water in this positionthat is, near the center of rotation ofthe bucket-the water as it is discharged offers but little resistance tothe rotation of the bucket. As the purified water enters the chamber 12,therefore, from the annular separator-chamber 7 it passes through theopening 16 in the lower end of said chamber 12 into the chamber 17, andthence through the discharge-pipe 18 into the trough 19, which isprovided with a pipe 20 for the delivery of the purified water to theboiler or other place of use. The inner wall of the annularchamher 7 isprovided at or near its upper end and near the wall 10 with openings oroiloutlets 21, through which the annular chamber 7 communicates with thechamber 17. An oil-discharge pipe 22 is provided at the openings 21,with its upper end projecting into the chamber 17 and its lower end intoan oil-trough 23 for carrying ofi the oil as it issues from the chamber7 through the openings 21, the trough 23 being provided with a pipe 24,leading to a suitable oil-receptacle.

Wings 25 26 27, extending from top to bottom of the chamber 17 alongsidethe wateroutlet 16 and oil-outlets 21, form separate passage-ways forthe discharged water and oil.

With an apparatus constructed as thus far described as the oil-ladenwater is delivered by the pipe 6 to the receivingchamber 5 it passesthrough the port 13, chamber 11, and perforations 14 into the body ofthe annular separator-chamber 7, and the bucket being rotated in thedirection of the arrow in Fig. 2 part of the oil carried bythe waterwill be separated therefrom simply by the action of centrifugal force,the water moving outward and forcing the oil inward. The oil thusseparated from the Water will pass through the outlet-openings 21 intothe chamber 17 and thence through the pipe 22 into the oil-trough 23,while the Water will pass through theopenings15intothedischarge-chamber12,and thence through the outlet 16into the chamber 17 and through the discharge-pipe 18 into the The waterthus passing ofi entirely purified or freed from oil if centrifugalforce alone were depended upon for the separation of the oil from thewater, as the more finely divided particles of the oil adhere sotenaciously to the wateras to resist the tendency of centrifugalforceand of gravity to separate them from the water. This completeseparation of oil and water, however, can be effected by providing theseparator-chamber with a filling 28, consisting of a mass of suitablematerial, which preferably entirely fills said chamber, and coating thesurfaces of such material with oil, which, as the oily water passesthrough said filling, will attract those particles of oil which are notseparated by centrifugal force and cause them to be deposited upon thesurfaces of such filling material. The particles of oil so deposited onthese surfaces as they accumulate become mobile and are continuouslyforced inward along these surfaces and through the mass by the pressureof the water within the chamber 7 under the action of centrifugal forceand caused to pass ofi through the openings 21, with the oil separatedfrom the water by centrifugal action. The adhesion between the oil andthe surfaces of the filling material, however, is such as to prevent theentire removal of oil from the filling by centrifugal action or by theflow of water through the filling, so that there will always remain uponsuch surfaces sufficient of the oil for the attraction of the particlessuspended in the water.

By the action of centrifugal force and the passage of the water throughthis oil-covered filling, therefore, the oil is completely separatedfrom the water, which is thus purified and rendered suitable for use inboilers or for other purposes. The process, moreover, is continuous andrapid, the water being purified as rapidly as it is supplied to theseparator and purifier, and the deposited oil, as before stated, carriedoff continuously asfast as it is deposited upon the oiled surfaces ofthe material constituting the filling, the entire surfaces of thematerial being thus kept con-- stantly clear and in working condition.Again, even should globules of oil become disturbed and detached fromsuch surfaces they will be of such size as to be readily separated bycentrifugal action and forced from chamber 7. It will also be observedthat the oily-water inlets 14 and purified-water outlets 15 and thefilling are so located relatively to each other, the filling beinglocated between them, that the water entering chamber 7 is compelled topass through said filling before it reaches the outlets 15.

Preferably the surfaces of the material constituting the filling 28 areoiled before the operation of the combined separatorand purifier isbegun; but this is not essential, as such oiling may take place duringits operation, the surfaces of the filling in such case being graduallycoated by taking up oil from the water passing through it.

The filling may consist of a mass of any material presenting surfaces ofa size and character capable of receiving and retaining a coating of oilor like substance having an affinity for and capable of attracting andcansing the deposition upon them of particles of the substance to beseparated and of permit ting said deposited particles as they accumulate to be moved along them and through the mass by the pressure of theliquid under the action of centrifugal force to the dischargepointsuch,for example, as pieces or sheets of metal, coke, wood, gravel, charcoal,iron or brass turnings, or wire-gauze--and such materials may be ofregular or irregular form and laid upon or in close proximity to eachother in regular or irregular order. 7 Where irregular pieces ofmaterial are employed, as shown, it will be understood that irregularpassages will be formed for the passage of the water and oil and thatthe oil in passing over the oiled surfaces will jump from one piece ofmaterial to the next, and so on until it escapes from the vessel.

The separator-chamber 7 is of course closed during the separating andpurifying operation and is provided with hand-holes closed by suitablecovers 29, so that access may readily be had to the interior of saidchamber for the purpose of inspecting or renewing and replenishing oroiling the filling material or for other purposes. The chamber 7 willalso preferably be provided with an opening or pipe 30 for theintroduction of steam or washwater for cleansing said chamber and itsfilling 28, this pipe being of course closed during the operation of theapparatus.

As hereinbefore stated,the centrifugal separator and purifier of Figs: 1to 4 may and preferably will have combined with it suitablepreseparating means for partially separating the oil from the water, soas to relieve the'separator and purifier of a portion of the work. Iprefer a centrifugal separator for this purpose and to locate suchcentrifugal separator in the same bucket with the combined separator andpurifier, the preseparator in such case serving also the functions ofthe receiving-chamber 5 of Figs. 1 to 4.

In Figs. 5 to 8 I have shown such an arrangement, the preseparator shownbeing formed in the same bucket with the combined separator and purifierand consisting of a central chamber 31, into which the delivery-pipe 6enters, the chamber 5 of Figs. 1 to 4 being omitted. In this chamber 31as the bucket is rotated part of the oil is separated from the water bythe action of centrifugal force, the water moving outward and forcingthe oil inward, as before described in connection with the annularchamber 7 of Figs. 1 to 4.-

Part of the oil thus separated from the water in thispreseparator-chamber 31 .passes through a discharge-pipe 22 into theoiltrough 23, and the remainder passes upwardly through an opening inthe top wall of the -chamber 31 around the pipe 6 into an oilchamber 31and thence downwardly through the discharge-pipe 22 into the oil-trough23, while the water from which the oil is thus separated and which stillcarries oil enters the annular separator-chamber 7 through radial orside openings 32in an open-ended casing or sleeve 33, projecting intothe chamher 31, and thence through a short pipe 34, inclosed by thesleeve 33, into the inletchamber 11, whence it passes into the body ofthe chamber 7 to be further purified in the manner described inconnection with Figs. 1 to 4. The inlet ends of oil-pipe 22 andwater-pipe 34 extend inwardly different distances, as will be observed,the former extending inwardly farther than the latter, the purpose ofthis arrangement being to locate these two pipes approximately in thefield or space, as indicated by dotted lines, Fig. 6, occupied by theseparated oil and oily water, and thus avoid the liability of the latterescaping by the oil-pipe, and vice versa. Escape of separated oil by thewaterpipe 34 is further guarded against by the provision of the sleeve33 projecting beyond the end of said pipe and the location of theinlet-openings 32 therein in close proximity to thewall or periphery ofthe chamber 31. By this preliminary treatment of the water and thepartial separation therefrom of oil the work to be done by the combinedseparator and purifier is very much reduced and the capacity of thecombined separator and purifier and its speed of operation thereforevery materially increased. Another advantage resulting from theemployment of such preseparator is that any particles of metal fromwearof the engines or rust, dust, pieces of packing, carbonized oil orfat, &c., carried by the water of condensation are caught and thrownoutwardly in the preseparator-case and not permitted to enter thecombined separator and purifier, where they might injure the fillingmaterial or otherwise interfere with the operation of the separator andpurifier, these impurities being afterward removed by hand when themachine has been stopped.

Instead of using apreseparatorin the same bucket with the combinedseparator and purifier, as in Figs. 5 to 8, a preseparator may beemployed which is in a separate bucket, as will be explained indescribing Fig. 9.

When operating upon water of condensation also, a preseparator may beadded to the apparatus, asbefore stated-namely, for the treatment of theexhaust-steam before condensation for the separation and removal of partof the oil therefrom-and apparatus suitable for this purposeis shown inFig. 9,which will now be described. Inthis figure of the drawingsI haveillustrated in diagram part of a steam-power plant equipped withapparatus for the partial separation of oil from the exhaust-steam,partial separation of oil from the water of condensation, and finalcomplete separation and purification of the water of condensation,rendering it suitable for reuse in the boiler. In this view, 35indicates a steam-exhaust pipe, and O a condenser to which the steam isdelivered thereby, while 36 37 indicate a pump and piping for deliveringthe waterofcondensation from thecondenser O to the delivery-pipe 6,leading to a preseparator I, whence the water, partially freed from oil,is delivered to a separator and purifier S, where it is finally freedfrom oil and returned to the boiler by pipe 20. The sepa rator andpurifier S of this figure is the same in construction and operation asthat illustrated in Figs. 1 to 4, while the preseparator P instead ofbeing in the same bucket with the separator and purifier, as in Figs. 5to 8, is in a separate bucket and is the same in construction as theseparator and purifier of Figs. 1 to 4 except that it is uuprovided withthe filling 28 of that figure, though such filling may be employed, ifdesired.

The steam-exhaust pipe 35 of Fig. 9 connects with an exhaust-separatorE, which may be of any approved form and which as the steam passesthrough it on its way to the condenser C separates therefrom part of themore-readily-separated oil which it carries, the oil so separated beingtrapped in the lower end of the separator. The steam after passing theexhaust-separator E enters the condenser C, where it is condensed, thewater of condensation being thence delivered by the pump and piping 3637 to the delivery-pipe 6, as just described.

The oil separated from the steam by the exhaust-separatorE and trappedin the lower end thereof may be run 05 into a suitable oil-receptacle,if desired; but as such exhaust-steam will carry with it considerablewater of condensation which will be trapped with the separated oil inthe exhaust-separator I treat the contents of the exhaustseparator forthe separation of the oil and water. To the lower end of theexhaust-separator I connect a pump and piping 38 39, which deliver themixed oil and water therefrom into a settling-tank 40, which is providedwith an outlet-pipe 41, connected with the delivery-pipe 6, leading tothe preseparator P. The tank 40 is provided with a transverse partition42 between the inlet and outlet pipes 39 41 and extending downwardly towithin a short distance of the bottom of the tank, the function of thispartition being to interrupt the flow of the mixed oil and water throughthe tank, and thus cause the readily-separated portion of the oil torise to the surface of the water on the inlet side of the partition 42,from which it is run off through a discharge-pipe 43, which may beprovided with a cook 44, while the water which still contains oil passesunder the partition 42 and through the pipe 41 into the pipe 6 and maypass thence, if it be desired to save it for reuse in the boiler, intothe preseparator P with the water of condensation from the condenser O,whence the water, partially purified, is pumped into pipe 6,1eading intothe separator and purifier S by pump and piping 45 46. To furtherprovide against the escape of oilfrom the tank 40, it is provided with asecond partition 42, rising from the bottom of the tank between thepartition 42 and outlet-pipe 41.

lot

IIC

It is to be understood that changes and modifications may be made in theconstruction and arrangement ofthe apparatus shown and described withoutdeparting from the invention broadly considered.

What I claim is 1. A centrifugal separator comprising a chambercontaining a filling consisting of a mass of suitable material throughwhich a liquid may be passed and whose surfaces are adapted for thedeposition upon them of particles of the suspended constituents of theliquid and for the movement along them and through the mass of accumulations thereof by the action of centrifugal force upon the liquid,substantially as described.

2. A centrifugal separator comprising a chamber containing a fillingconsisting of a mass of suitable material through which a liquid may bepassed and whose surfaces are adapted for the deposition upon them ofparticles of the suspended constituents of the liquid and for themovement along them and through the mass of accumulations thereof by theaction of centrifugal force upon the liquid, in combination with meanscommunicating with said chamber for effecting a partial separation ofsaid constituents before delivery of the liquid to said separator,substantially as described.

3. A centrifugal separator comprising a chamber containing a fillingconsisting of a mass of suitable material through which aliquid may bepassed and whose surfaces are adapted for the deposition upon them ofparticles of the suspended constituents of the liquid and for themovement along them and through the mass of accumulations thereof by theaction of centrifugal force upon the liquid, in combination with asecond centrifugal separator communicating with said chamber foreffecting a partial separation of said constituents before delivery ofthe liquid to said chamber, substantially as described.

4. A centrifugal separator comprising an inner preseparator-chamber andan outer separator-chamber into which it delivers its contents,containinga filling consisting of a mass of suitable material throughwhich a liquid may be passed and whose surfaces are adapted for thedeposition upon them of particles of the suspended constituents of theliquid and for the movement along them and through the mass ofaccumulations thereof by the action of centrifugal force upon theliquid, substantially as described.

5. A centrifugal separator for oilywater, comprisiugachambercontainingafilling consisting of a mass of suitable materialthrough which the oilywater may be passed and whose surfaces are adapted for the depositionupon them of suspended particles of oil and for the movement along themand through the mass of accumulations thereof by the action ofcentrifugal force upon the Water, substantially as described. I

6. A centrifugal separator for oily water,

. com prising a chamber containing a filling consisting of a mass ofsuitable material through which the oily water may be passed and whosesurfaces are adapted for the deposition upon them of suspended particlesof oil and for-the movement along them and through the mass ofaccumulations thereof by the action of centrifugal force upon the water,in combination with means communicating with said chamber for effectinga partial separation of oil before delivery of the water to saidseparator, substantially as described.

7.-A centrifugal separator for oily water,comprisingachambercontainingafilling consisting of a mass of suitablematerial through which the oily Water may be passed and whose surfacesare adapted for the deposition upon them of suspended particles of oiland for the movement along them and through the mass of accumulationsthereof by the action of centrifugal force upon the water, incombination with a centrifugal separator communicating with said chamberfor effecting a partial separation of oil before delivery of the waterto the said chamber, substantially as described.

8. A centrifugal separator for oily water comprising an innerpreseparator-chamber and an outer separator-chain her into which itdelivers its contents, containing a filling consisting of a mass ofsuitable material through which the oily water may be passed and whosesurfaces are adapted for the deposition upon them of suspended particlesof oil and for the movement along them and through the mass ofaccumulations thereof by the action of centrifugal force upon the'water,substantially as described.

9. A centrifugal separator for oily water comprising an innerreceiving-chamber and an outer separator-chamber with which itcommunicates, containing a filling consisting of a mass of suitablematerial through which the oily water may be passed and whose surfacesare adapted for the deposition upon them of suspended particles of oiland for the movement along them and through the mass ofaccu mulationsthereof by the action of con trifugal force u pon the water,substantially as described.

10. A centrifugal separator for oily Water comprising an innerpreseparatorchamber and an outer separator-chamber into which itdelivers its contents, containing a filling consisting of a mass ofsuitable material through which the oily Water may be passed and Whosesuitable material through which the oily water may be passed and whosesurfaces are adapted for the deposition upon them of suspended particlesof oil and for the movement along them and through the mass ofaccumulations thereof by the action of centrifugal force upon the water,an oil-discharge pipe leading from said preseparator-chamber, and anoily-water pipe leading from said preseparator-chamber to the outerchamber, substantially as described.

12, A centrifugal separator comprising a chamber provided with anoily-water inlet and a water-outlet and containing a filling consistingof a mass of suitable material located between said inlet and outlet,and whose surfaces are adapted for the deposition upon them of suspendedparticles of oil and for the movement along them and through the massofaccumulations thereof by the action of cen trifugal force upon thewater, substantially as described.

13. A centrifugal separator comprising a chamber provided with anoily-water inlet and a water-outlet and containing a filling consistingof a mass of suitable material located between said inlet and outlet,and whose surfaces are adapted for the deposition upon them of suspendedparticles of oil and for the movement along them and through the mass ofaccumulations thereof by the action of centrifugal force upon the water,said outlet discharging in proximity to the side thereof next the centerof rotation of the separator, substantially as described.

14. A centrifugal separator for oily water comprising a chamber providedwith an oilywater-inlet chamber and a water-outlet chamber into whichsaid inlet-chamber delivers its contents and containing a fillingconsisting of a mass of suitable material located between said chambers,and whose surfaces are adapted for the deposition upon them of suspendedparticles of oil and for the movement along them and through the mass ofaccumulations thereof by the action of centrifugal force upon the water,substantially as described.

15. A centrifugal separator for oily water comprising a chamber providedwith an oilywater-inlet chamber and a water-outlet chamber into whichsaid inlet-chamber delivers its contents and containing a fillingconsisting of a mass of suitable material located between said chambers,and whose surfaces are adapted for the deposition upon them of suspendedparticles of oil and for the movement along them and through the mass ofaccumulations thereof by the action of centrifugal force upon the water,the discharge-outlet of said outlet-chamber being located in proximityto the side thereof next the center of rotation of the separator,substantially as described.

16. A centrifugal separator for oily water comprising a chamberprovidedwith an oilywater-inlet chamber, a water-outlet chamber and anoil-outlet, and containing a filling consisting of a mass of suitablematerial located between said inlet-chamber and said outletchamber andoutlet and whose surfaces are adapted for the deposition upon them ofsuspended particles of oil and for the movement along them and throughthe mass of accumulations thereof by the action of centrifugal forceupon the water, substantially as de scribed.

17. The combination with a suitable'condensing means for exhaust-steam,of a centrifugal separator to which the water of condensation isdelivered, comprising-a chamber containing a filling consisting of amass of suitable material through which the oily water maybe passed andwhose surfaces are adapted for the deposition upon them of suspendedparticles of oil and for the movement along them and through the mass ofaccumulations thereof by the action of centrifugal force upon the water,substantially as described.

18. The combination with a suitable condensing means for exhaust-steam,of a separator to which the water of condensation is delivered for thepartial separation ofoil, and a centrifugal separator to which the wateris then delivered, comprising a chamber containing a filling consistingof a mass of suitable material through which the oily water may bepassed and whose surfaces are adapted for the deposition upon them ofsuspended particles of oil and for the movement along them and throughthe mass of accumulations thereof by the action of centrifugal forceupon the water, substantially as described.

19. The combination with a suitable condensing means for exhaust-steam,of a centrifugal separator to which the water of condensation isdelivered for the partial separation of oil, and a centrifugal separatorto which the water is then delivered, comprising a chamber containing afilling consisting of a mass of suitable material through which the oilywater may be passed and whose surfaces are adapted for the depositionupon them of suspended particles of oil and for the movement along themand through the mass of accumulations thereof by the action ofcentrifugal force upon the water, substantially as described.

20. In an oil-separating system for exhauststeam and its water ofcondensation, the combination of a separator for elfecting a partialseparation of oil from the steam, suitable condensing means for thepartially purified steam, and a centrifugal separator to which the waterof condensation is delivered from said condensing means, comprising achamber containing a filling consisting of a mass of suitable materialthrough which the water is passed and whose surfaces are adapted for thedeposition upon them of suspended particles of oil and for the movementalong them and through the mass of accumulations thereof by the actionof centrifugal force upon the water, substantially as described.

21. In an oil-separating system for exhauststeam and its waterofcondensation, the combination of a separator for effecting a partialseparation of oil from the steam, suitable condensing means for thepartially purified steam, a separator to which the water of condensationis delivered from said condensing means for effecting a partialseparation of oil from said water, and a centrifugal separator to whichthe water is delivered therefrom, comprising a chamber containing afilling consisting of a mass of suitable material through which thewater is passed and whose surfaces are adapted for the deposition uponthem of suspended particles of oil and for the movement along them andthrough the mass of accumulations thereof by the action of centrifugalforce upon the water, substantially as described.

In an oil-separating system for exhauststeam and its water ofcondensation, the com-- bination of a separator for effecting a partialseparation of oil from the steam, suitable condensing means for thepartially purified steam, a centrifugal separator to which the water ofcondensation is delivered from said condensing means for effecting apartial separation of oil from said Water, and a second centrifugalseparator to which the water is delivered therefrom, comprising achamber containing a filling consisting of a mass of suitable materialthrough which the oily Water may be passed and whose surfaces areadapted for the deposition upon them of suspended particles of oil andfor the movement along them and through the mass of accumulationsthereof by the action of centrifugal force upon the water, substantiallyas described.

23. In an oil-separating system for exhauststeam and its water ofcondensation, the combination of a separator for separating oil from thesteam, a second separator for effecting a partial separation of this oilfrom the water of condensation which passes off with it from the steam,and a centrifugal separator to which the water thus separated isdelivered from said second separator, comprising a chamber containing afilling consisting of a mass of suitable material through which thewater is passed and whose surfaces are adapted for the deposition uponthem of suspended particles of oil and for the movement along them andthrough the mass of accumulations thereof by the action of centrifugalforce upon the water, substantially as described.

24. In an oil-separating system for exhauststeam and its water ofcondensation, the combination of a separator for separating oil from thesteam, a second separator for effecting a partial separation of this oilfrom the water of condensation which passes off with it from the steam,a centrifugalseparator to which the Water thus separated is deliveredfrom said second separator, and a second centrifugal separator to whichthe water is delivered from the latter, comprising a chamber containinga filling consisting of a mass of suitable material through which thewater passes and whose surfaces are adapted for the deposition upon themof suspended particles of oil and for'the movement along them andthrough the mass of accumulations thereof by i the action of centrifugalforce upon the water,

substantially as described.

25. Inan oil-separating system for-exhauststeam and its Water ofcondensation, the combination of a separator for efiecting a partialseparation of oil from the steam, a second separator for effecting apartial separation of this oil from the water of condensation whichpasses off with it from the steam, suitable condensing meansfor thepartially-purified force upon the water, substantially as de scribed.

26. In an oil-separating system fol-exhauststeam and its water ofcondensation, the combination of a separator for effecting a partialseparation of oil from the steam, a second separator for effecting apartial separation of this oil from the Water of condensation whichpasses off with it from the steam, suitable condensing means for thepartiallypurified steam, a centrifugal separator to V which the water isdelivered from said second separator and said condensing means, and asecond centrifugal separator to which the water is delivered from saidcentrifugal separator, comprising a chamber containing a fillingconsisting of a mass of suitable material through which the water ispassed and whose surfaces are adapted for the deposition upon them ofsuspended particles of oil and for the movement along them and throughthe mass of accumulations thereof by the action of centrifugal forceupon the water, substantially as described.

27. In an oil-separating system for exhaustst-eam and its water ofcondensation, the combination of a separator for effecting a partialseparation of oil from the steam, a settlingtank for effecting a partialseparation of this oil from the water of condensation which passes offwith it from the steam, condensing 28. In an oil-separating system forexauststeam and its water of condensation, the combin ation of aseparator for effecting a partial separation of oil from the steam, asettlingtank for efiecting a partial separation of this oil from thewater of condensation which passes oft with it from the steam,condensing means for the partially-p11 rified exhauststeam, acentrifugal separator to which the water is delivered from saidsettling-tank and said condensing means, and a second centrifugalseparator to which the water is delivered from said centrifugalseparator, comprising a chamber containing a filling consisting of amass of suitable material through which'the water is passed and whosesurfaces are adapted for the deposition upon them of suspended particlesof oil and for the movement along them and through the mass ofaccumulations thereof by the action of centrifugal force upon the water,substantially as described.

29. A centrifugal separator comprising a preseparator-chamber and aseparator-chamber rotating upon the same axis and into which saidpreseparator-chamber delivers its contents, the latter chambercontaining a filling of suitable material, substantially as described.

30. A centrifugal separator comprising an inner preseparator-chamber andan outer separator-chamber into which said preseparatorchamber deliversits contents, said chambers rotating upon the same axis and said outerchamber being provided with a filling of suitable material,substantially as described.

31. A centrifugal separator comprising an inner preseparator-chamber, anouter separator-chamber into which said preseparatorchamber delivers itscontents, said chambers rotating upon the same axisand said outerchamber being provided with a filling of suitable material, anoil-chamber with which said preseparator-chamber communicates, providedwith asuitable oil-discharge, and an oildischarge pipe projecting intothe presepa rator-chamber, substantially as described.

32. A centrifugal separator comprising an inner preseparator-chamber, anouter separator-chamber into which said preseparatorchamber delivers itscontents, said chambers rotating upon the same axis and said outerchamber. being provided with a filling of suitable material, anoil-chamber common to said two chambers and provided with a suitableoil-discharge, and an oil-discharge pipe leading from thepreseparatouchamber, substantially as described.

water-pipe to the center of rotation of the separator, said two chambersrotating on the same axis and the outer chamber being provided with afilling of suitable material, substantially as described.

34. A centrifugal separator comprising a separator-chamber 7 containinga filling of suitable material and provided with water inlet and outletchambers 11, 12 communicating with the body of said separator-chamber,substantially as described.

35. A centrifugal separator comprising a separator-chamber 7 containing.a filling of suitable material and provided with waterinlet andwater-outlet chambers 11, 12 communicating with the body of saidseparatorchamber, the outlet-chamber being provided with adischarge-opening in proximity to the side of the separator-chamber nextthe center of rotation of the separator, substantially as described.

36. The combination of a preseparatorchamber 3l, separator-chamber 7,pipe 34 connectingsaid chambers and casing 33 inclosing said pipe andprovided with side openings, said chamber 7 being provided with afilling of suitable material, substantially as described.

37. The combination of a preseparatorchamber 31, separator-chamber7,pipe 34 connecting said chambers, casing 33 inclosing said pipe andprovided with side openings, and oil-discharge pipe 22 leading from thepreseparator-chamber, said separator-chamber 7 being provided with afilling of suitable material, substantially as described.

38. The combination of a preseparatorchamber 31, separator-chamber 7with which it communicates, oil-chamber 3.1 and oilpipes 22, 22 leadingfrom said preseparator and oil chambers respectively, saidseparator-chamber 7 being provided with a filling of suitable material,substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

THOMAS SAULT.

Witnesses:

J. G. CABLE, II. D. Thompson.

